SFTP Receiver Error:variable substitution can not parse the message xml:Content is not allowed in prolog

Hi All,

Scenario: IDoc to XML

I am getting Error in Receiver SFTP Channel "Content is not allowed in prolog" while using Variable Substitution, But same configuration and IDoc (Triggered through we19)works fine with File channel.

I have checked and no space or special character in the field but numeric value.

Screenshot: SFTP Receiver Channel

Regards,

Mani